A dust bag and method of production

A - Human Necessities – 47 – L

Patent

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Details

A47L 9/14 (2006.01) B01D 39/16 (2006.01) B01D 39/18 (2006.01) B31B 41/00 (2006.01) B31B 49/04 (2006.01) B32B 5/22 (2006.01)

Patent

CA 2117902

A dust bag (60) comprises a filter bag consisting of a filter material. In a first wall portion (51) of the filter bag, an inlet opening (56) is provided through which the air flow to be cleaned gets into the filter bag, On the inner surface of the wall portion opposite the inlet opening, there lies a protective layer (48) of a resistant material of great tensile strength. This protective layer extends as a strip through the filter bag and prevents damage to the inner surface of the filter bag caused by particles striking the same.

Sac à poussière (60) comprenant un sac de filtre constitué d'un matériau filtrant. Dans une première partie (51) de paroi du sac de filtre, un orifice (56) d'entrée est prévu dans lequel l'écoulement d'air devant être épuré pénètre à l'intérieur du sac de filtre. La surface interne de la partie de paroi située à l'opposé de l'orifice d'entrée est recouverte d'une couche protectrice (48) de matière résistante qui possède une grande résistance à la rupture par traction. Cette couche protectrice s'étend sous forme d'une bande dans le sac de filtre et protège la surface interne du sac de filtre contre les dommages provoqués par les chocs des particules sur ladite surface.

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